Asceticism of the Six Samurai is a Quick-Play Spell Card.
Spell Cards are usually activated from the hand on your turn unless their type gives another timing window.
On the current TCG and OCG Forbidden & Limited lists tracked here, Asceticism of the Six Samurai is Unlimited.
YGOPRODeck lists Asceticism of the Six Samurai for these formats: Duel Links, TCG, OCG, Master Duel.
Asceticism of the Six Samurai belongs to the Six Samurai archetype—use that tag when searching for engine pieces and tech options.
A listed print of Asceticism of the Six Samurai appears in Battles of Legend: Glorious Gallery (BLGG-EN107) at Ultra Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Asceticism of the Six Samurai is about $0.08 on Cardmarket (prices change frequently).
